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-rw-r--r--video/filter/vf_crop.c196
1 files changed, 196 insertions, 0 deletions
diff --git a/video/filter/vf_crop.c b/video/filter/vf_crop.c
new file mode 100644
index 0000000000..c4e0b4253b
--- /dev/null
+++ b/video/filter/vf_crop.c
@@ -0,0 +1,196 @@
+/*
+ * This file is part of MPlayer.
+ *
+ * MPlayer is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * MPlayer is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with MPlayer; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "config.h"
+#include "mp_msg.h"
+#include "options.h"
+
+#include "img_format.h"
+#include "mp_image.h"
+#include "vf.h"
+
+#include "m_option.h"
+#include "m_struct.h"
+
+static const struct vf_priv_s {
+ int crop_w,crop_h;
+ int crop_x,crop_y;
+} vf_priv_dflt = {
+ -1,-1,
+ -1,-1
+};
+
+//===========================================================================//
+
+static int config(struct vf_instance *vf,
+ int width, int height, int d_width, int d_height,
+ unsigned int flags, unsigned int outfmt){
+ struct MPOpts *opts = vf->opts;
+ // calculate the missing parameters:
+ if(vf->priv->crop_w<=0 || vf->priv->crop_w>width) vf->priv->crop_w=width;
+ if(vf->priv->crop_h<=0 || vf->priv->crop_h>height) vf->priv->crop_h=height;
+ if(vf->priv->crop_x<0) vf->priv->crop_x=(width-vf->priv->crop_w)/2;
+ if(vf->priv->crop_y<0) vf->priv->crop_y=(height-vf->priv->crop_h)/2;
+ // rounding:
+ if(!IMGFMT_IS_RGB(outfmt) && !IMGFMT_IS_BGR(outfmt)){
+ switch(outfmt){
+ case IMGFMT_444P:
+ case IMGFMT_Y800:
+ case IMGFMT_Y8:
+ break;
+ case IMGFMT_YVU9:
+ case IMGFMT_IF09:
+ vf->priv->crop_y&=~3;
+ case IMGFMT_411P:
+ vf->priv->crop_x&=~3;
+ break;
+ case IMGFMT_YV12:
+ case IMGFMT_I420:
+ case IMGFMT_IYUV:
+ vf->priv->crop_y&=~1;
+ default:
+ vf->priv->crop_x&=~1;
+ }
+ }
+ // check:
+ if(vf->priv->crop_w+vf->priv->crop_x>width ||
+ vf->priv->crop_h+vf->priv->crop_y>height){
+ mp_tmsg(MSGT_VFILTER, MSGL_WARN, "[CROP] Bad position/width/height - cropped area outside of the original!\n");
+ return 0;
+ }
+ if(!opts->screen_size_x && !opts->screen_size_y){
+ d_width=d_width*vf->priv->crop_w/width;
+ d_height=d_height*vf->priv->crop_h/height;
+ }
+ return vf_next_config(vf,vf->priv->crop_w,vf->priv->crop_h,d_width,d_height,flags,outfmt);
+}
+
+static int put_image(struct vf_instance *vf, mp_image_t *mpi, double pts){
+ mp_image_t *dmpi;
+ if (mpi->flags&MP_IMGFLAG_DRAW_CALLBACK)
+ return vf_next_put_image(vf,vf->dmpi, pts);
+ dmpi=vf_get_image(vf->next,mpi->imgfmt,
+ MP_IMGTYPE_EXPORT, 0,
+ vf->priv->crop_w, vf->priv->crop_h);
+ if(mpi->flags&MP_IMGFLAG_PLANAR){
+ dmpi->planes[0]=mpi->planes[0]+
+ vf->priv->crop_y*mpi->stride[0]+vf->priv->crop_x;
+ dmpi->planes[1]=mpi->planes[1]+
+ (vf->priv->crop_y>>mpi->chroma_y_shift)*mpi->stride[1]+(vf->priv->crop_x>>mpi->chroma_x_shift);
+ dmpi->planes[2]=mpi->planes[2]+
+ (vf->priv->crop_y>>mpi->chroma_y_shift)*mpi->stride[2]+(vf->priv->crop_x>>mpi->chroma_x_shift);
+ dmpi->stride[1]=mpi->stride[1];
+ dmpi->stride[2]=mpi->stride[2];
+ } else {
+ dmpi->planes[0]=mpi->planes[0]+
+ vf->priv->crop_y*mpi->stride[0]+
+ vf->priv->crop_x*(mpi->bpp/8);
+ dmpi->planes[1]=mpi->planes[1]; // passthrough rgb8 palette
+ }
+ dmpi->stride[0]=mpi->stride[0];
+ dmpi->width=mpi->width;
+ return vf_next_put_image(vf,dmpi, pts);
+}
+
+static void start_slice(struct vf_instance *vf, mp_image_t *mpi){
+ vf->dmpi = vf_get_image(vf->next, mpi->imgfmt, mpi->type, mpi->flags,
+ vf->priv->crop_w, vf->priv->crop_h);
+}
+
+static void draw_slice(struct vf_instance *vf,
+ unsigned char** src, int* stride, int w,int h, int x, int y){
+ unsigned char *src2[3];
+ src2[0] = src[0];
+ if (vf->dmpi->flags & MP_IMGFLAG_PLANAR) {
+ src2[1] = src[1];
+ src2[2] = src[2];
+ }
+ //mp_msg(MSGT_VFILTER, MSGL_V, "crop slice %d %d %d %d ->", w,h,x,y);
+ if ((x -= vf->priv->crop_x) < 0) {
+ x = -x;
+ src2[0] += x;
+ if (vf->dmpi->flags & MP_IMGFLAG_PLANAR) {
+ src2[1] += x>>vf->dmpi->chroma_x_shift;
+ src2[2] += x>>vf->dmpi->chroma_x_shift;
+ }
+ w -= x;
+ x = 0;
+ }
+ if ((y -= vf->priv->crop_y) < 0) {
+ y = -y;
+ src2[0] += y*stride[0];
+ if (vf->dmpi->flags & MP_IMGFLAG_PLANAR) {
+ src2[1] += (y>>vf->dmpi->chroma_y_shift)*stride[1];
+ src2[2] += (y>>vf->dmpi->chroma_y_shift)*stride[2];
+ }
+ h -= y;
+ y = 0;
+ }
+ if (x+w > vf->priv->crop_w) w = vf->priv->crop_w-x;
+ if (y+h > vf->priv->crop_h) h = vf->priv->crop_h-y;
+ //mp_msg(MSGT_VFILTER, MSGL_V, "%d %d %d %d\n", w,h,x,y);
+ if (w <= 0 || h <= 0) return;
+ vf_next_draw_slice(vf,src2,stride,w,h,x,y);
+}
+
+//===========================================================================//
+
+static int vf_open(vf_instance_t *vf, char *args){
+ vf->config=config;
+ vf->put_image=put_image;
+ vf->start_slice=start_slice;
+ vf->draw_slice=draw_slice;
+ vf->default_reqs=VFCAP_ACCEPT_STRIDE;
+ mp_msg(MSGT_VFILTER, MSGL_INFO, "Crop: %d x %d, %d ; %d\n",
+ vf->priv->crop_w,
+ vf->priv->crop_h,
+ vf->priv->crop_x,
+ vf->priv->crop_y);
+ return 1;
+}
+
+#define ST_OFF(f) M_ST_OFF(struct vf_priv_s,f)
+static const m_option_t vf_opts_fields[] = {
+ {"w", ST_OFF(crop_w), CONF_TYPE_INT, M_OPT_MIN,0 ,0, NULL},
+ {"h", ST_OFF(crop_h), CONF_TYPE_INT, M_OPT_MIN,0 ,0, NULL},
+ {"x", ST_OFF(crop_x), CONF_TYPE_INT, M_OPT_MIN,-1 ,0, NULL},
+ {"y", ST_OFF(crop_y), CONF_TYPE_INT, M_OPT_MIN,-1 ,0, NULL},
+ { NULL, NULL, 0, 0, 0, 0, NULL }
+};
+
+static const m_struct_t vf_opts = {
+ "crop",
+ sizeof(struct vf_priv_s),
+ &vf_priv_dflt,
+ vf_opts_fields
+};
+
+const vf_info_t vf_info_crop = {
+ "cropping",
+ "crop",
+ "A'rpi",
+ "",
+ vf_open,
+ &vf_opts
+};
+
+//===========================================================================//
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-16 09:40:10 +0000